Well totally agree.
In PvE it makes low to no difference.
Even clicking would be totally viable imo, I know clickers who perform really their class at its very best on PvE side.
Depend a bit on class though (by just clicking on some class you could do "very well" but not "the best you can do" imo), but ofc a pro-clicker in PvE is always better than a bad "Iboundeverythingonmyshiny127buttonsnaga" player .
But on PvP good binds are essential imho.
And mine was not a critic to anyone playstyle, just some personal feeling considerations.
What I do is ok for me, but could be wrong for other players ofc.